Study of quality and extent of intrathecal bupivacaine block by extradural injectio n of bupivacaine or normal saline in combined spinal epidural technique

The aim of the present study is to substantiate and compare the quality and extent of nerve block by using intrathecal bupivacaine or extradural bupivacaine alone and in combined spinal-epidural (CSE) technique using smaller dose of intrathecal bupivacaine and extradural injection of a smaller dose of bupivacaine or normal saline.